In 1977, the Soviet Union deployed in its western territories the SS-20 Saber, an intermediate-range ballistic missile with a nuclear warhead and the capacity to reach Western Europe. The move precipitated an arms race and arms...

The Intermediate-range Nuclear Forces (INF) Treaty has been in danger of collapsing in recent years. Russia has been developing a new ground-launched cruise missile that contravenes the treaty, and NATO has raised concerns over...